Tuning the carburetor VAZ 21043

The domestic brand VAZ-2107 was launched in Togliatti in 1982, and on April 17, 2012, the last “seven” rolled off the assembly line. Over 30 years, 3.1 million VAZ-2107 vehicles have been sold around the world.

The machine has an attractive design, is fast, and easy to maintain. Considering the huge number of cars operated by ordinary Russian people, I propose this article with personal observations on servicing a simple carburetor - the main device for preparing the working combustible mixture.

Briefly about the features and structure of the “six” carburetor unit

Before adjusting the carburetor on a VAZ 2106, it doesn’t hurt to know its design features. After 1980, Ozone and Solex began to be installed on Tolyatti cars. The purpose of the unit’s operation is to prepare a combustible mixture before feeding it into the car’s cylinders. Down to the subtleties, this is not a driving school, we will not disassemble the design, it is enough to familiarize yourself with the main components that ensure optimal operation of a carburetor internal combustion engine:

Fuel dosing system.
Mechanisms for controlling throttle valves and enriching the mixture.
Idle system.
Accelerator pump and econostat.
Float chamber.

A chamber with a float and a needle valve is responsible for the stability of the fuel level. Next, gasoline, flowing through the spray tube, enters the chamber, where it mixes with air from the inlet pipe. The amount of mixture is adjusted by the throttle valve, which is connected to the accelerator pedal.

Precise adjustment allows you to prepare the correct mixture of gasoline and air in a ratio of 1:15. During long-term operation of the car, the settings get lost and you have to think about how to adjust the carburetor on a VAZ 2106 on your own. The adjustment technology is the same for both Solex and Ozone.

What models are installed on VAZ 2106/2107 cars

All types of carburetor mechanisms equipped with the VAZ 2106/2107 are aimed at reducing fuel consumption and giving the car maximum dynamism. In addition, an important role is played by such an indicator as environmental friendliness. For a decade, AvtoVAZ engineers gave preference to the most environmentally friendly types of carburetors.

Carburetors of three different models were installed on modern VAZ 2106/2107, as well as on cars produced in previous years:

Manufacturer: Dimitrovgrad Automobile Assembly Plant (or DAAZ). It should be noted that the company produced carburetors under license from Weber. Structurally, these devices were as simple as possible both in operation and in further maintenance. In addition, their main advantage was to provide excellent speed performance for cars of the sixth and seventh VAZ models. At the same time, DAAZ carburetors consume a very large amount of gasoline - from 10 to 14 liters per 100 kilometers.
Manufacturer: DAAZ, modification “Ozone”. This is a more advanced version of the first type of DAAZ, which has high environmental performance. The device provides good acceleration characteristics and consumes less than 10 liters of fuel per 100 kilometers. However, the disadvantage of this model is that it comes with a second camera. In its operation, a pneumatic valve plays an important role, which, in case of contamination or poor-quality adjustment, can stop the carburetor from working.
Manufacturer: DAAZ, modification 21053, which is produced under license from Solex. One of the most modern types of carburetors for equipping the VAZ 2106/2107. Maximum environmentally friendly and productive. It has a more complex design; the first in the DAAZ line is equipped with a reverse fuel supply system, which makes it as economical as possible. However, Solexes are demanding on the quality of gasoline - otherwise the fuel nozzles become clogged very quickly.

Modern VAZ 2107 models are equipped with this unit.

Common features in the design of carburetors for the VAZ Six and VAZ Seven

The carburetor mechanisms that are equipped with all VAZ 2106/2107 models throughout the entire production period of the car are two-chamber, that is, they have two internal combustion chambers. Structurally, all carburetors have three indivisible parts:

at the top there is a cover of the device, which protects the mechanism from dirt, and fuel fittings;
the middle part is a housing, inside which the chambers and diffusers themselves are located, transfers the air-fuel mixture to the engine;
The float compartment and throttle valves are located in the lower part.

In the operation of DAAZ carburetors, small parts are of great importance - gaskets, jets, float, economizer or dampers. All elements of the system are interconnected and failures in one part will inevitably lead to failure of the entire device.

The DAAZ carburetor on the VAZ 2106/2107 works according to the following principle:

Gasoline enters the float chamber through the inlet valve.
The required fuel level is regulated by the needle of the forced idle economizer or power stroke economizer - in any case, fuel enters the chamber in a strictly defined proportion.
Next, the fuel is sent to emulsion chamber No. 1 through nozzles.
In the chamber (or VBC), gasoline is crushed into small parts and mixed with air.
When the torque increases during acceleration, internal combustion chamber No. 2 may also be activated.
After the formation of the air-fuel mixture, the pump directs it to the diffusers, and through them to the engine.

That is, the main task of the carburetor is to form the air-fuel mixture in a strictly adjusted proportion to ensure smooth operation of the engine.

The presence of many small elements ensures reliable operation

When is adjustment needed?

Adjusting the carburetor unit is no more difficult than adjusting the clutch drive on a VAZ 2107 , since it only involves adjusting the jets. In some cases, they need to be cleaned of resins and other contaminants; the presence of contaminants is felt by power dips in the process of accelerating. Many car owners claim that Ozone carburetors are not a very good option and recommend replacing them with Solex.

However, the signs that the device has begun to prepare an enriched mixture and needs to be adjusted are the same for both types of units:

Increased fuel consumption.
Frequent overheating of the motor.
Black smoke from the exhaust pipe and pops.
Loss of power.

The preparation of a lean mixture is characterized by the following characteristics:

Popping sounds in the carburetor.
Loss of power.
Engine overheating.

Of course, you don’t always need to immediately grab a screwdriver and turn the adjusting screws - perhaps it’s something else. For example, when the idle speed floats, air may leak through the intake manifold gasket, or there may be a breakdown of the brake booster diaphragm. But even the reasons listed are not all the options, so specific recipes for eliminating certain problems cannot be given. The issue should be addressed comprehensively, taking into account the connection between vehicle systems.

Oil type

We looked at what kind of oil to pour into a VAZ 2110 in winter based on such a parameter as viscosity.

But the type of lubricant should also be taken into account. There are three in total:

Mineral;
Synthetic;
Semi-synthetic;

Mineral oil for winter VAZ-2109 is the worst option. Such a lubricant made by processing petroleum products is characterized by insufficiently good performance indicators, especially low-temperature viscosity. That is, its thickening threshold is much higher than that of other types of oil. But here it is worth noting that such oil for use as a lubricant is practically never found. But it is often used as a basis for flushing liquids.

Synthetic oil is one of the most optimal options for power plants of modern cars. It is obtained by synthesis, during which certain parameters of the lubricant are set, including viscosity. Therefore, when deciding which oil to pour into a VAZ-2114 in winter, preference should be given to synthetic oil.

It is these two criteria - viscosity and type that should be taken into account when determining which oil to fill in the VAZ-2115 or any other model for the winter.

Naturally, you should pay attention to the manufacturer. You should not buy lubricant from dubious places of sale or from little-known manufacturers. When choosing oil, it is better not to skimp.

When choosing oil, it is better not to skimp.

Preliminary stage

Before you properly adjust the carburetor on a VAZ 2106 with your own hands , it is important to carry out a number of work steps:

Adjust the thermal clearances of the gas distribution mechanism.
Set the optimal ignition timing.
Open the air damper completely.

All work on setting up the carburetor unit is carried out on a warm engine. Do not forget that during the process you may need new parts and rubber products, so it is better to purchase a repair kit in advance.

Float adjustment

One of the main stages in setting up a carburetor unit. A high level will produce a “rich” mixture, and more of it will be supplied to the cylinders, but there will be no expected dynamics. Only fuel consumption will increase, as well as its toxicity.

The float tongue must be installed so that its stroke is no more than 8 mm. In some cases, the problem may be the needle valve. Then you need to remove the float, pull out the needle and check the patency of the holes.

Setting idle speed

The process involves two screws that set the quantity and quality of the mixture. For high-quality settings, having a gas analyzer will not hurt. Before adjusting the carburetor on a VAZ 2106, you need to know about the restrictive plastic bushings that are pressed onto the adjusting screws. These plugs do not allow you to violate the factory settings. If this factor prevents you from setting XX normally, then you should break them out with a slotted screwdriver.

Idle speed control technology:

With the air damper open, set the crankshaft speed screw to 800-900 rpm.
Rotate the quality screw to set the maximum engine speed.
Using the quantity screw, set the speed on the tachometer to 950-1030 rpm.
Use the quality screw to set the maximum speed again.
Repeat these operations until the speed of 950-1030 rpm does not coincide with the maximum speed set using the quality screw.
After the moment of coincidence, return the quality screw to the position where the engine speed was 800-900 rpm.

If you have a gas analyzer, use a quality screw to achieve a CO concentration in the exhaust gases of 0.5-1.2%. The final position of the screws must be secured with plastic sealant to prevent spontaneous unscrewing.

Adjusting the rods

An equally important stage in the process of adjusting the “six” carburetor is performed through the transitions:

Remove the air filter and its housing.
Measure the distance between the central points of the tips, it should be 80 mm .
To change the length of the rod, release the tip with a screwdriver and unscrew the lock nut with an “8” wrench, and then perform the adjustment by rotating the tip.
Tighten the fasteners and install the rod in its original place, start the engine and press the gas pedal all the way. If the throttle does not open completely, the damper has a travel reserve.

When asked how to further adjust the carburetor on a VAZ 2106, experts recommend performing a few more simple steps:

Remove the end of the longitudinal linkage and unscrew the locknut.
Reduce the length of the rod, secure it and again check the degree of opening of the damper by pressing the gas pedal to the floor. The damper must be completely closed.
If it is necessary to increase the rod length, you need to loosen the throttle cable.

Diagnostics

The primary conclusion whether the fuel pump is working or not can be assessed by ear when the ignition is turned on. If you can’t hear a quiet buzzing sound from behind, then you need to check the voltage supply to the gas tank block and later draw a conclusion about its malfunction.

Add to the group on VK https://vk.com/autovaz2107 Donation to pay for the web: WEBMONEY- R394885703159 YANDEX.

You can check the serviceability of the fuel pump using the MTL-2 pressure gauge; this is the most correct way. You can somewhat roughly estimate the pressure using air pressure gauges to check tire pressure. To do this, screw a rubber hose to the sensor and connect it to the fuel system.

The pressure of the VAZ 2107 injector fuel pump when the ignition is on should be 4.0 atmospheres, and when the ignition is running 2.8-3.2. In reality, the pump pressure is different and was slightly less, but this may be an error in the pressure gauge.

The carburetor pump is checked by setting the camshaft position by cranking the engine so as to ensure free movement of the pump foot. The hose is unscrewed from the carburetor or filter and the presence of fuel supply is determined by pressing the foot.

What do we have after proper adjustment of the carburetor unit of the “six”?

Checking the adjustments of the fuel mixture preparation unit is the same important maintenance step as monitoring the condition of the car battery . An integrated approach to setting up the carburetor guarantees not only a comfortable mode of movement, but also a lot of useful points:

An increase in power and a confident increase in speed.
No failures in the operation of the internal combustion engine in the low and medium speed sector.
Improved dynamic characteristics - the car picks up speed faster and accelerates in a short time.
Optimal engine response, which is expressed in the responsiveness of the gas pedal.

The listed qualities make it possible to effectively use the combustible mixture, which is necessary both in urban traffic jams and on country roads. Therefore, proper adjustment of the carburetor unit will help the car gain speed in a timely manner and complete the planned maneuver.

The carburetor on any vehicle is one of the components of the fuel system of an internal combustion engine. It mixes air with fuel liquid, and this mixture is supplied to the cylinders of the internal combustion engine. As you can see, this automotive part plays a very important role in the functioning of the vehicle as a whole. Therefore, the carburetor must be adjusted periodically. You will learn how to do this correctly on a VAZ-2105 from this article.

Brake system VAZ 2104

Brake fluid level sensor built into the expansion tank cap;
Electronic mounting block in the engine compartment with terminal “A” to the generator;
Ignition relay with negative terminal to ground;
Ignition switch on the steering column;
Indicator lamp on the instrument panel indicating low brake fluid level;
Indicator lamp for activated parking brake.

The first stage is setting up the float mechanism of the VAZ-2105 carburetor

First of all, to adjust the carburetor float mechanism, the car should be allowed to idle. And only after that begin the adjustment procedure.

The carburetor cover is removed.
The current level of fuel fluid in the chamber of the float mechanism is checked (its digital indicator should ideally be 28 mm).

If the digital indicator of the fuel level in the float chamber corresponds to the norm, then nothing needs to be adjusted. Otherwise, you need to do the following:

check the distance from the cover gasket and the float itself (this is done at the moment the needle valve ball comes into contact with it) - the norm is 6.5 mm (+- 0.25 mm);
bend the tongue;
check the maximum stroke of the valve needle - the norm is 8 mm;
check the distance from the cover gasket to the maximum retracted float - the norm is 14 mm (+- 0.5 mm).

If the indicators do not meet standard standards, they can be adjusted using a bracket. If the optimal level of fuel fluid in the float chamber was not obtained after adjustment, the needle valve will have to be replaced.

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Question: Is this an original DAAZ carburetor, not a fake?

Answer: The carburetors are original.

Carburetors from other manufacturers are often mistaken for fakes: AT, LSA, Road Map, PEKAR

These manufacturers have their own markings and appearance.

We have no information about cases of counterfeit carburetors of the main models produced by OJSC DAAZ. There is no protection on the carburetors either. It is better to make the purchase in the presence of an experienced motorist, who will be able to determine by appearance that the product is counterfeit. Start your purchase by inspecting the carburetor packaging.

Boxes for packaging carburetors are universal, with designations of carburetors that can be packed in them. A mark is made against the designation of the carburetor actually packed in the box, usually in the form of a tick.

All distinctive features, markings, appearance, etc. You can watch the video review on the product page

Question: What color is the box?

Answer: Carburetors come in boxes from LADA Image JSC and OAT Group

Packaging design of JSC "LADA Image":

Packaging design "Group OAT":

Question: There is a version that the original DAAZ products are packaged only in a red and white box, and everything else is fake.

Answer: The official website already has answers to similar questions. You can also find tips and tricks on setting up carburetors there.

Answer:

1) Why increase the speed much higher than recommended by the car manual?

2) When changing the idle mode only due to one adjusting element, inevitably, the mixture composition will go beyond the optimal range and unstable speed will appear.

Answer:

Question: I have a SOLEKS 21053 carburetor, should the float chamber needle keep the fuel flow if the return line is plugged? Answer: The float and needle valve are capable of maintaining a constant fuel level up to a pressure of 0.45 kg/cm2.

Question: I bought a carburetor 21053-1107010-20 for a VAZ-21053, and there are three vacuum distributor fittings. Which of these fittings (upper, lower or middle) should it be connected to, and what are the two additional fittings for? Answer: The lower fitting is intended for connecting the vacuum ignition timing corrector on the distributor-distributor. The two upper fittings should be plugged, because they are designed to control the exhaust gas recirculation valve, which your vehicle does not have.

Question: I read most of the “questions and answers”, but did not find an answer to my question. Which jets need to be changed on Solex 21053-1107010-20 for a 1.2l engine?

Answer: For a 1.2 liter engine. You need a carburetor 21051-107010 (currently not produced due to lack of demand) with 23x23 diffusers. On the carburetor 21051-1107010-20, you should install the fuel jet GDS 1 chamber 102.5 or 105, if there are comments on your fuel consumption.

Question: I have several questions about carburetors. 1. When installing a 21053 carburetor on a classic, what kind of textolite gasket should be used, thin or thick, between the carb and the intake manifold, and what will result from an incorrect installation (now the thick one seems to be from 8, but in your FAK I saw a message that you need to install 4mm) . 2. I have an engine displacement of 1650, compression 13-14, is carburetor 21053 suitable? Or is it better to put Ozone? 3. I was interested in why the second chamber in carburetor 21053 is very lean? (110/165) no other has such depletion, what is this connected with and wouldn’t it be better to put at least 115/165? 4.How does the level in the float chamber affect the flow rate? If it is less, then the consumption is also less and vice versa? How to correctly set the floats, in the literature there is a template according to which the level is set and at the same time it is said that from the gasket to the floats when the ball is pressed there should be 2mm and this somewhat contradicts the template. Why am I asking all this, I just found out experimentally that the jets in the first chamber exactly correspond to the factory ones (107.5/145 (slightly leaner)), but I haven’t really picked up the 2nd chamber yet... the dynamics are generally satisfactory, but the fuel consumption is slightly increased, sometimes 15l/ 100 km in the city, maybe it’s worth putting Ozone on my volume?

The second stage - we adjust the starting device of the VAZ-2105 carburetor

At this stage, in a garage environment, a car enthusiast can perform the following steps to configure the carburetor system that starts and warms up the engine:

close the air damper (this is done using the thrust handle located in the car interior);
check the location of the rod shank, which must be at the end of the groove of the carburetor rod to start the system;
measure the gap level from the edge of the valve to the chamber wall (measurements are taken when the rod is recessed) - the norm is 5-5.5 mm.

If the digital indicators differ from the established standards, they are adjusted by rotating a special adjusting screw (it is located on the carburetor trigger).

Third stage - idle speed adjustment

This stage is no less important than the previous two. To do this, the internal combustion engine is pre-started and warmed up. Only after this can the idle speed be adjusted.

The motor is brought out using rotational movements of the mixture quantity screw - the norm is 850 rpm:
to increase the speed, you need to rotate the mixture quality screw (to the maximum level);
to reduce the speed you need to rotate the quantity screw (to the desired level of 850).
Tighten the quality screw as far as it will go (rotational movements are performed until the motor stops shaking).
Unscrew the same screw in the opposite direction three turns.

In this way, the VAZ-2105 carburetor is adjusted at idle. Auto mechanics call all of the above actions calibration of the crankshaft idle speed.

Cleaning the carburetor on a car without removing it

Carburetor injection, being an outdated system compared to an injector, is still a fairly common internal combustion engine power supply scheme. Today, carburetors are found mainly on domestically produced cars and old foreign cars, which continue to be actively used in the CIS. Quite common malfunctions that a driver may encounter are cases when a carburetor car has a problem with idling, the engine does not start, is unstable or stalls when driving, in transient modes, etc. There are also jerks, failures during acceleration, the engine runs rough and consumes a lot of fuel.

In other words, it is impossible to continue driving the car. The reason is the need to clean the carburetor, which tends to become clogged over time. In this article we will talk about how you can clean the carburetor and how to clean the carburetor without removing it from the car. This can be especially useful when cleaning the carburetor is urgently needed in the field, the machine is located far from service centers, etc.

Read in this article

Expert advice

After completing the procedure for adjusting the VAZ-2105 carburetor device, experienced auto mechanics recommend paying attention to the following critical points:

Valve location - is in the retracted position, with the idle speed jet touching the seat in the carburetor body.
Lubricating the rubber seal with special motor oil.
The location of the air damper intended for cold passage is in a vertical plane, while the suction handle is lowered.
The condition of the solenoid valve - the presence of damage and malfunctions is checked as follows:
turn on the ignition;
remove and put the connector on the valve;
listen to the sounds coming from the solenoid valve.

Main parts

To perform its tasks, the carburetor

VAZ
2105 consists of the following mechanisms and systems:

See:

Engine starting and warming up system.
System for maintaining the required fuel level .
System XX (idle);
Econostat system.
Acceleration pump.
Main dosing system.

There are three systems that can be configured - they are first on the list. Adjusting the VAZ carburetor 2105

can be performed without removing the device from the machine.
How to adjust the carburetor on a UAZ. Due to the fact that the carburetors of the fifth and seventh models are identical in structure and differ only in the diameters of the holes of the air and fuel jets, the carburetor for the VAZ 2107 can be adjusted using the same method.

Tools and equipment for work

To carry out maintenance work you will need:

A set of standard keys;
Screwdrivers;
Pliers;
Rags;
Carburetor cleaner (“Carb Cleaner” or equivalent);

You will also need a repair kit for the carburetor. Various types of repair kits are available, some of which include only gaskets, while others include all parts (jets, screws, emulsion tubes, etc.). It is better to purchase a complete set.

Since the carburetor consists of many small parts, disassembling it into its component parts, washing and troubleshooting and tuning is carried out in stages so as not to lose sight of anything.